Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dacf18659d3b8d04f68e59a37f9bc9bc1e482032e107865aa63275d19f5c8bf6' 
  AND token = '2VHVBokCDf7wt8CHNo3WUI7HjG5dUI0ra3zTPxNEKBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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