Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'd419e4a296c9db420a7cf6c1536e52a9103847e172ea312c7944c939d0d7eab3' 
  AND token = 'SCCSIHGYTOWyMUB145OH7sxBg1kJy44gHgicqxNs7T8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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