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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38a2fe0221b6c115f6a3c2f472bc94ae75b8d25bfef5f5e0f3372f13853c69a1' 
  AND token = 'CcmQy7LV5izXydMJ7zAtIBdXfAADtweZzDQxgImJAAM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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