SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '057290c5133f70753735c88cc01ee90cfb3995bac67d18b1a7c96791ed63bc8c' 
  AND token = 'Z5wsKAdfuw4LIPwn1whx/WPpMvZmyFYBiB2qoSsjg9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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