Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '207bedc5984cbf74cbe177f3f7cc6bf0f212c7995e8b3560af727cb36143961c' 
  AND token = 'R9iTmPTeER6WF+z44uHgmC+uIFR7dmbz9QAfNMoBdVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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