Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fbb4d2325ab30176657ff31e312df9f888ac7f3ed4e37f1aba65f837be19c938' 
  AND token = 'EkYDEwjb9/tzt3uW9hfyTYv7DovPlBvAA3GSBahwlms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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