Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eee1d12485e2fa208c40b1e4b088f48103c98d9e7b82b6b7723ec0875c3dd442' 
  AND token = 'E0xmafR9FfRLLyT+pdHwOe5treDGoT9Yiac65p+fh/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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