SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66fe6b9515f107d83a02ea7b6b7f6011368d8bf7b6b37eb478bd05ac45b9c805' 
  AND token = 'csZuhLVleD9lGL09UUj8K4Yf/FFqeCvouOnQuZ2cwk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00085

JSON explain

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