Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec951532844c3308e9a3af86c6505a24a22f9437468d029f32345c670bfe9d0f' 
  AND token = 'V41CRfxP6nQqx16S8GGe7hVCkdxjrubT4tTMBjZW3LE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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