Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afbbf784deb1f3e93e7a7aa9fd8d754061156af7af0ff57633179412530bd893' 
  AND token = 'RO72uKB0k0BcwebP8bjf5LIFHFlME+D3R/srO1R14B8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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