Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bded79b6617e70a02c3a98226e5781aeb68cf9b8f0a64d23676c2cc8c2442e53' 
  AND token = 'T07tbG3HA0sO+XV29OzisQu02zJr55I5iRU9XFOFfIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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