Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4c5e996ebcfedd69326fdd85f65483a0d33a336b9977209fafa2d65dd096d4b' 
  AND token = 'bU35BblGH8ZiW4G9JLN6xnxtfYvg5NCpuYwIXFkDn1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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