Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7aa06c8d22f9863b825b082f314252c37c0c81ed68b1e3ffb4d395b814ac2ad1' 
  AND token = '9ZN0dEbFWEe/7vupI53xsHpV7s0m64Mx3x7b+BEvltU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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