Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c7edf19b9321317dde6e56d1b3e225679b1ace1219562787463c87d8559941f' 
  AND token = 'DXPPBHCrkgwhFJN92quMwvFp6H8xXPT9g3k6oSpNJqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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