SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09e179dfce716583b4731dd479c524352bab4228ad224e3284a301d68a4a48df' 
  AND token = 'j7GMUQeB5pH6r2JVVVpuOGijkiaNn/iPn7whFmq0GRc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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