Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4823b81651a504e8c223fff1a92062dd97b4cfe99df8c9931b418d40fc04bdef' 
  AND token = 'heNsP7kfnjbMojFaUtaH3O1Rxa9WOlTMuCaJhTLy2gE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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