Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '371372a93c82833c44493614d5440b6c2e24311d666ee64ac94988b3d62490ae' 
  AND token = 'msYjCq8iIuRsNhGzmNPCIDmirEEyL9ED6lgv1j2TTCI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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