SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '244f992260e3998150f2f9b233a4ca91e8695b30b76daf8e43ab985c612d9960' 
  AND token = 'wx+9/YPqDmshTfOUK+R6IfvgPe70V5hfueZWLuUGm3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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