Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '494d4b1d79de1e085b89d62918e63d320f2c087e98e6ef99413a136689348e34' 
  AND token = 'F7H8GKdF2HZ35tPqEnk3Ao6qDKExwSPg7kZoGmsQnoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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