Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ade03c980cef37603c1f41edf60116048c7015dce9cab07957b7fad3cb6fe424' 
  AND token = 'YHicHBBID2F+eS2a4MkpUN/cNV5gacsoANnWre5W/ro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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