Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57d5d7acaaa3d226c5e3debadde1684a63bf32fa44ae3f22c7158e24eae9eaba' 
  AND token = 'lNufwj8E481CARovZvmvdY/vcfFA9DCLEYwb9UMK6eI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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