SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1fb90e3293cebe2ac74fb49cd34e47e514f3013c6641f8ec557169e1bba7c1c3' 
  AND token = 'eF9nrPQTs83QvBN/ffLKhLo+pVCV5qlLPqB3JIkFujs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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