Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad9ce15be76c1047a32583d880d90f8acb4d22e19480aa15882f1e0654c809f0' 
  AND token = 'YrPziuRIRHDII9/Rb8SG9RWgBUc031grEsmHsIYAbZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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