Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '4170e8a4d6417abc144838e8c8e6073de66a9a8301b8c72ab256e1c1d6823022' 
  AND token = 'By7TmGPWeV0ajposK3kIr+m+FZHOdXA/jY/d5QKjnas=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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