Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e210ef0dae947879c8ebaadf174e699b6b6e641c277c14693e119d9e32e820a' 
  AND token = '5MMUHvsPXkSLfkgayPi/gxndWGf+m+3q+M/19WjjSxo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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