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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec738343643498f24e3e74a0a3360cc22c468b4027697463222e9fa120591fe5' 
  AND token = 'cGDIgEJYF9TQKtiuaXX7g7Y2DzpB8ot9SXv9bsdOc7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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