Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e07db39e0f25ded4f541cf9d98eedc0893f489b8b6148fdb22e2e2abb2460055' 
  AND token = 'iqNJ3AFQEztjY15zMfQ2LVPbLAXHLh2dlXMminTIBDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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