Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ba5f77182bd9b957de0bdfa6acb4b8f6f543b61f6ff963033ca8995abe80b03' 
  AND token = 'iquX2LSu2T4aZK1AcgA/yT4NKp2EgvF1TM/QQ609bL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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