Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f88cf7511dce4bf5a4d161de7ade5f3b66311d7ec0ecefab6d4abbf8fbe7150' 
  AND token = 'eCkNtapHraWveshkc00Q6aotoZfyNbklfAEUoYks1PY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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