Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e44d4c907f3370392e8b32affb7c915ae98d169b665ffc7428ea7b3e101c755' 
  AND token = 'VZmgjmV09zKlF/LSu0ATekOyKCmEQeP+bIfDO2LgQW8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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