Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4caf79c8b8b0b151db0368a39489aa5d3ef496f2c834d1cd6b78b669a7735b0e' 
  AND token = 'wenV1JyTA9RWOqrJ403a0ZRignWD9tRfDG5Fyc7hEaU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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