Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8134e470b9a04ca02de84a28e5985004276aa20ceb6ba595460ce8cb509a29c9' 
  AND token = 'qp7GhU3BUTX3F27vYYPVw6QfNY34MGLjNeazBPu0rF0=' 
  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"
    }
  }
}