Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca133065515df849512724f25c23755a385b6918070f5ecd7aa2cb68a30b308c' 
  AND token = 'AbJE72ZOBUBWu39DwwIJ2WAeV31z+w4kEPqOsxyg9+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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