Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b4b15fe5cd92f67cdbe53acbe7b3e74deed2c29369284aaca9ae8a5019d4c989' 
  AND token = 'v3Qr7l/9K4B7QgaRoGen3O7Ei09exREbJMrH449lb8g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00179

JSON explain

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