SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a375314e8d1df44fda9e0c733bd602ae68184672a14ff9f10409941180590e91' 
  AND token = '1AJG95gEPLB1QijQZfNqqYK1/g4cezVvsBmCOIfT8hk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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