Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd269eae04fb91b5c661eec58a885d8a0e7e61aebc44b5c24a3063eb449506af9' 
  AND token = 'pNvfT2lo0nCj6GEuCDqNw9RHjcAoeKa7I/ik3QTpX9s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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