Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '979865b60d49c2670107a16d6d0f48a3e074a372a26d56bd183f5efdac09a1a4' 
  AND token = 'ksC7o/bRmK4FtMxJHiC/etvSp87OB4XXpMK6Ufxg3o8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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