Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '641b3e18cb12df67bfc03cf0e3350217cee1a37d80e0bdbd0ae11abcb389e59c' 
  AND token = 'oDBLV+fThjXzFJPN9aB7gZdT4Bt1uOABc6sigUCusDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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