Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4569f4ea5c911c3640e5bcd088ac7b5df5e2fb64487c25168d10b7f5e35e1138' 
  AND token = '29NT8e1fQxWwBAJiaQGviHWaN7edpv6ijq6cafGAJHE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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