Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f7dafb08c500f482c95b1b306ed96fdd4986e9cc46948ff32e48b04b87d5905' 
  AND token = 'yxpdtkYYfNCrWvaosshBwkPjZAGtAGq849Xe3FgP65Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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