Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b587c7c6828c89b0c0df5e4b3a7f89c04232c776b7ee1371c91ae1a6c9997616' 
  AND token = '3nKtcZW5kWzGfWSF5g+zMc8DScxGWws/jox6A/QM1DM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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