Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '286d27e86a1f4db7a50964cbb3607b59ad50d721f682292b6cc17fdcbd5e9e90' 
  AND token = 'oYG8pOwaLtGL6p69nx/OdlabeZuWCmzguOnHfCVWh/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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