Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14067265ee361509873d23254e7e4596d61cc65c372a0e2659ac0ba50ad7db59' 
  AND token = 'PyjfKkTLcoWZ0Sph/gfu4oPGR8mnD32x1Ou6KSJeMYo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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