Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e12c11999bf0b32f3ab2b48b45aad82a560a9807f3d5e16d2355a0ef8362e205' 
  AND token = '9FUyau3UngPn/Z5pON2NNmMgqw4sTO1Tz69QMniHrDI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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