Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9dede00278831c40971e2e964568fb63faecbb5ee33e6aaa586b344078760bb' 
  AND token = 'QCc60Qcwae1ICWuvujZnhG4c2ezNrJkme720YrSD4Us=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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