Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '31bb461ce1ec056ff2d24811c70eb078a100085ed3eb46b3e74f83acd47e3181' 
  AND token = 'wWZoZi9HGKa3vH4B6dv0FQzuafduyxOBRpp3n7wswzQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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