Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37da8d8aa88c5936838110bb31481b515fe0373834e948c5c31a51d6625081f2' 
  AND token = 'zRPbmc0+W1wBS8OlcFyogRcl8YM0qr9M45SkuU6RMoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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