Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17a8924d2a6db3e7a69c70d5d466630e2c55cbcaf9543f808a79578e71001436' 
  AND token = 'iB2hAysgCsAxvCvXN95ymLqmjJPwZ9O2g6GedCe7dwI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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