Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ac9072b249e8dcb39111cda532a4cd5941fb56841311b1020a59ca4f064533a' 
  AND token = '/Mcme9sVLIZt2M4oR+FIPxBASE1heHn+xF4nQY0ARLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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