Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd96b9cb688cd3280f4c5a2ec46892e5f69112f2d47af046ffebb15fe8acbf14' 
  AND token = 'EQvj1BJDVBRMLjVA2/WwJKFixpy9QyrOGQt4XpUMIMA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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