Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac2de19365edabd04a7255dc4ebee5b7144602085110f379c04af303c29b82f8' 
  AND token = 'LlTpNK9kmhD8J07sst8gwG+dGkDMbx2RuWHJHDAB9b8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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