Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30e4ba056e5c49688de2d1974aebb89689ad34f53a6930b06a76aeb6c415a1c2' 
  AND token = '0x/dYeNd5HYtanbYS4VPJzk/J9nCQJcnYgI4zwGA9SM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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