Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fc3d7b6d2ecde960dc7e0abe9d21320a35609236ed27ef46636392f9499cb2e0' 
  AND token = '1X0iRox6wtBw/R1VYAL5DDQ7LgBCuLeF2u0OOyXpsRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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