Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a32ac095d5b8cd0cd9fe93d7725814fc4c69172374e22db395c94fb2cf8eabaa' 
  AND token = 'nSxqDLXIwwzeuRh5Gri0+iuRYaN/sZ9tUssQ6AQfPMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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