Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'df046b48b226e6f9d8725fbed10bb7d50312af9785ac57094c7e83e891278393' 
  AND token = 'BtQJsBfK0Y/WH1/xAWhXB5cwQebR8lfb+7IOV6Idti0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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