SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0745a94182446227b2853f61b0d226463f673fe6dc615de2dabfe99c5b4ec917' 
  AND token = '67gok/TJ3pWcplEMHCjcRVPxbz7QCrcUzMYl+wMMaGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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