Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0214da651940e517b07b959b8f1d9b7e6ba20470cf66988c3a8e4dc18d6d8560' 
  AND token = '0nH2gSBTSh1URX0XCQSMib+W6Ehmnbdj+1yI1s9QbjI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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