Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aeda4b1f19999b060d1273592b0980fb667d4d66f9d66eb1307d2d6966bdb348' 
  AND token = 'AfpGpXYCNIaEggFvIJyulq2FefEcb59ar6sZmms/INI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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