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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95fbe19dad47071116558f66a656a30cf1157e6af46df36cb0ba10007dacaea8' 
  AND token = 'VB/dUyHGeOdez2TAwpxeaRgKU+Hcr5eh2eN394KsMfg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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