Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e2f97c0d603a6f54e964df38dcfb3dfbb846eaea188992ae0b68458b7f2ef7c' 
  AND token = 'mie2OeS97laghgKi02DcoNmB05OmnYRogtUm6k+lwOA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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