Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecfcd88411682f2b476d5ab5eb961b29e19b54c9bfacac778ceaae4533d39d8b' 
  AND token = 'GeWdInlr/Q9quVCzpKKOE8Kr+aGbMWKnDo1LxVuVyXc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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