Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '583ee44d4b8626ca915b9dcf869afec2adcfb027728247716bbc85353a650477' 
  AND token = 'TPTN1nA5bqRUR9yLXQRHnTN94pttM+G4lDLgUV76qDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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