Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '697b48a9b87d99f30415556c269bc58ad39137249b2eac151681fed68c9ea70b' 
  AND token = 'iSmfHNIQVbWSVEn3sW+OP/20cHG8/+H9k1eGGDwC/y8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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