Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'dc18acc9907c89f42b839812860186de041de64b5c88cc5d50fda4e41d6535a6' 
  AND token = 'C7ZH3B55hIVck3L6jiRLtEHbAc9cpyPqSJEszSSXYyk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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