Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3cce5eb83f27ebcbb1396794f3f766998efc60335a84927bdd56068073f9fd58' 
  AND token = '1bYKxRmV4SU3PU6IgWeXJzSUKI3sAI0AagaFBSofxBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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