Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00aedf6f2ea540d5b669a052848e3ce568c1822a0f668be5cbc2a286d1111bdf' 
  AND token = '4hPk5FublCxO0gO50b6B6X6xjpySKm/qtblY2FzdXWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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