SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '16fc7c5dd80e24379b936d877a7df934d2925107007097473b92b76372e2b4fc' 
  AND token = 'dfV87NKvafy0G2/m1n/D9kjhJvEP9zJkgpR6C58SlxU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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