Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c425307ea5d0e61ab106ff35dfafa98e02680b387f39676c18d00e03249595b' 
  AND token = 'Ta/U6iEU6A8jAHXVgE7YrUIdu0e4xCOjdED2TE20rfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}