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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9395d97ceb16cf4261c5a0c22a508edb469b7230e8eac8579c05e3c76629657' 
  AND token = 'EagG4PXt1Zo0nowoHw12OdXnTY+IaZ+l8HmdO2gxDzY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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