Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bd082ff23a526e53d0b7369175c96a0ec71ca282e0cbdc80527282e4139d336' 
  AND token = '1touAwAEsvPdQE2wj5gSjRWokCwgTtgyXY2JmNkCf0A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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