Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '1480ffb8f9f3726820c81bdce1601b573390d1344d8545eb4c27417c7e19e2d3' 
  AND token = 'd1qmL+JM3PSwqT6ak2UYJSkFXQVF3e/IRUaMnfH9Nm4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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