Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daa2e2052528aead318e58461a9fb3a72e99154b2bbc61c3dda1aa40e9f23689' 
  AND token = 'rlvjwJN0686QEyQUraIhFdV0AcWmuvV+IW9W4OjyI0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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