Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fada932ceffeae4a24923402435d919679346ef7fc486f5819b5a8dfa6fa58b7' 
  AND token = '80fpoU3/EJZ60n0JzxHFE23oZpuZDsc/wx6aa/gm+ew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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