Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46620c01172b0efca2e1aca1212ee4da00ef884b60f694b467903cdc5ec1470c' 
  AND token = 'Yk9dcEGwxe+RM9ieefUZFoTdjjTiQsSd65bJuK10+HM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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