Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19994058a693ed135caa7e3c327402207ffeef90b07cacfd49b59830b1b01652' 
  AND token = 'SEkdzT9EGPW1YOLylAEjQdVJv0P+SzHpXlMKpFgbnr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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