Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd44b27691e2123dfac77a9f49a23de2a93dcf0b2a2675913ff426a23d4b89e19' 
  AND token = 'yJy9GpVz939ASCXt2JLFvod/0EkScaFRRUJ7K3J7HNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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