Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd87750aba32bbb13505058a75a1d39db7bca49f99aa1608e7a926550b3507e4f' 
  AND token = 'YaQTNEGumXasHECdUvyF4cKw0Ik56SMtX7krTfmP8Es=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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