Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '057f6722b6392f906ccdb93c7eefaf1ad78d97f10377c1b47449fc362bd19c6d' 
  AND token = 'uch9sQQ2GBAhXkchqP3ITCdixdoPur511oY3b0vrcBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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