Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e39633d99a1a4faa687e3ba45af5488e01ed08f3663982cc40173ffc651093f3' 
  AND token = 'bWdlUY57X0bK0kzsEf2UNCXhSJPkCf7lAc+BdceMhrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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