Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '342feddbefda925258cf06f4feb14b64b714563d8fa5adfdfc70034f29b82301' 
  AND token = 'yLCR8MrsRbZrHgLm8iOYCmDuxlKkM0ObtHMSjdyRfcg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}