Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e18fe0dc67c975f03301d3ab48210d4408ce7c9d33a3782870ffb028309145d4' 
  AND token = 'K13k8bjuNyJ4YN4isrtWobWM3UCPvZXx1DHcG+crh8g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00129

JSON explain

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