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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34801d756e42d2e05cdbf37cdd7ef8a6eb1c291ffea729651e60e3d4dde00598' 
  AND token = 'pyhZBPPxDgHRxie+2pQV/Y5UR4CF+MqUlpkpS9IG7EU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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