Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a72010234cdfe5d3f69c966401555995bc5c4c642162388be1731246c14fc24b' 
  AND token = 'IRUbamiNTUcKepqVkPKMH8Cu3+F2QNenZ9UFrkyIIis=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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