Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '15770bf29d4ce87dbf3455dd9a62e9019adff631a58cb0db2313649b695663a6' 
  AND token = 'h4g4umX6Ic7jKqmLdBclaQWAc9k+x1AF5E6fXSAurqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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