Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3ab129b364aaf05b170614e46fb9543368ead1f47dc030e726f630842448f22' 
  AND token = '06GJLfZRr5t225SlhJhoOyewN9zNpuKky8igsWtqSLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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