Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2d6cd07207009da37d9d7e988fc8690f7899667f8a1e5bbed13ccebeef432904' 
  AND token = '7+76bhJNQ5+WJTFN5emyq5PyIL/u0i7y5HCOiFo0JcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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