Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdcbb5c39c19ac2837b8b2de9544cb7193bcc7c9c3e348a16d428fef06c6f87d' 
  AND token = '/bZe/OQH//XAU/ay14zlb2cJZf1u0cvcUNFD6njvrRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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