Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee738c9b0aa1121a2198ad475feb9a814fb695151ce22e57dc741ac8c5fcd641' 
  AND token = 'wCFe/bNs/R8h4/EhE//mZsdkIgzh6xCu8D0TZP7S4v0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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