Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33171bedb6fc08f817990b932df844969fdeb11df7ed55fef02ab8cecc100df6' 
  AND token = 'E3CtxPX9YZ2/9eUdA090FPlCHPJIgj9SD3dsfovm114=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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