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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d70025dc81c318ba1d00caa4a478e139dbd231bfc88ef5c956e5babe649c376' 
  AND token = 'VOr41dt0JbLgcKZUjBEWxtFRk3ovPkrv1c3rs0q0RLg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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