Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0ae45eae39bb6e9330d3cb9529e6a5a1af2be2fd52e3cbf8de7aaca7a103128' 
  AND token = '733jmlBZM3mjwVv65uu2IvqtVA/MzGORHiH9ruraDEg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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