Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34a7e76be92ea277530117186b9f07c6add429e5c4f0af6f239906949fbd8b66' 
  AND token = 'Q3/ccdDuYHH0QNO3HblKoVjUVJENHP02EQhZuuKiTXg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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