Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36145cfcc28fd126dd840dc0959fddb2e00336bd649fd9d37a3abbd17ed0fd02' 
  AND token = 'ns9+r0Fo7skXw/S9xoQCooGO7fA4BJP806WnYDf3Fgs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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