Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9893b3a22c959c65f77bc9ef627c8a910841eb71498a569fc94a12523d1b64e3' 
  AND token = 'Lg19XEv+vWTYl4PNyD9/IZb74bUBB3Fuyu4Q6EB4idc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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