Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aabd2ca4a07f61d5e5f969dd2b8f7a10943738a5aba512c71056ad9be569b603' 
  AND token = 'DeeHGQEI5OqLUg4U2FDuzd21s4t38NsUP93UphJY8P8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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