Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14ec024c89880953731894dc0ae0bd6577e4f63a1a249b2da5888a171859d670' 
  AND token = '4Of7n5OynzdI0W/nw/B6wsP9XJzKQOy8OAb9sTW6JJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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