Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '856f7a9c19e8ea49041f468b61be9b4b1996bd40c865bcbed273bec47c15bcae' 
  AND token = 'X/fVj1n2EwlL7Bcvb3SUn6ZsNLPxY63ak4MNn168mrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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