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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f3eafa6cb965ff2bb847cba5f7e12e1126bca219d0183809cdc7385e681f5fb' 
  AND token = 'Ota9NF4TnLnP0HOHD+ItGKMU70Cay9GMzZIHKYEKcJc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}