Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04db49f9daa989ae41f4ae64153cb5eb715078cb58aae40b9a0b2264b99681e3' 
  AND token = 'vZODU8S0tJnQwN51NRZaraZ7lDHdoLE8/JNqc0PebkY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}