Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '284e3e269b0be41c30f34d26e66d41bc8bcc1819b5b3a1ad2411608311eff0d4' 
  AND token = 'Vx+cBPiWNz9/uXsb1E2WTiMe5LJsxPcwtU6WRWOYjSw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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