Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63fe58dca48caedfcb931df07166627e948a7ac09cb7fc5dec701ea459916643' 
  AND token = 'oC5sexijTcbrzMxFbn4hzyHVaM63C/1nwrEuzbQtq8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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