Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bedfaca46ba75ad2f9f8a91b676b67b35b54ecc30bbd367415da0dc96d79f146' 
  AND token = 'i2GZBvTZclnxkF5Qb1GLkRvEEGlk8qW2NE4Nm8zMnBg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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