SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '71e295cc82cc28dbbd06b0e4ec625397b849a95311f956c242c8403747a5d8cc' 
  AND token = 'gBx0RutbIaXkzPNJ3KsaJ0J0wK1HgLzrnzVvqVBVu/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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