Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82fcf21f4d55cf0b70a6a3a023986e652dbb31e9eb36bd3f200418b0a55c8fa5' 
  AND token = 'X5P287IF+pVdXrMLCXkIYz4qzZtNDRrf0+1AE6PIMx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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