Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0c207df64314a09aadd979cee44053532d99617fbdd3dfbdc2c8c36d16c5d79' 
  AND token = 'wNmw7Gyb6grWNyH8/dwYbpwMHYgk9YSrTvb1qmRAq+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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