Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f7a71f04828dbbc56fd45d0d8d790076a9c95fa9cac015b0a0ad0942674f762' 
  AND token = '65vxMuQ2gDsportvp0oZ3gHOJZ9thIUDPStd4X2OiYg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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