Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edab7275bc53ac36bac23c0ca8d972b738e21b6e64f8390c3eaf8de07341d8ef' 
  AND token = 'yvTIKBIl6C73oRo+SGz9P8lCYCz3pRAbYtLMVjRM8Tg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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