Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b41cbafd98774c7b83750a3b0c4140d1c36486cf1b05d73def67ab2ba91f7ac3' 
  AND token = 'wukOI7/1JQN2qW2x1E5ZLau32QGPgA2CvkR3xzbDpBo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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