Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb17876e44042dbf604f44266486e7789bab765124cae03552dd9b0b3ad894a2' 
  AND token = 'npxe9Bkj+osRToqmArqiloHc8BXUHoZHtHeUZQcD7kU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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