Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41ca83c62959b8e73da27f3d9e3f649f1b3139dfe64ca170df60b5d5dd814bd2' 
  AND token = 'fIxLc90o9GBxnu2b+TA4UpSokzyBdUu9C96yNkNLiso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}