Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27fe326e25c2f36ea486f2808f3b87b41ba84c4894b04693cb8f2e55b909c6d8' 
  AND token = 'FIZ0hSX/GrB3Zd9rP187pnT3wyXa7yz3NS1K3HkUWgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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