Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e6afbdad0c847de8ae619af666c4322bffb2f26d0db8f718937de49b193905f0' 
  AND token = 'WS3Jl0sDWGX9TGxLgYkhZuiUOQydWvN11cBfhZD3opc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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