Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24c62ea15daefdcbb7af35f7b892f64ad13e60985dda7a058dfe274f078473e3' 
  AND token = 'bVXZO7e/56mXKCr2I1K6aMIeV+FfcwbZrEExFDnqgHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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