Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea6c73ddb9f3c09745407ef3bca9340ff2f8a0892dee3f8520e909723edb680d' 
  AND token = 'A49DQHnom6deLHRnPd0TspnpSLQaEfA5WnGt1v+ZzEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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