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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '032209ea33bb4b11cdb3d4bd6ffae4ebe84e91451e4d21308ec9b157469f0384' 
  AND token = 'IP30OG0uA56eab0131Umql0SONqClCjrWu10Ijr4ipk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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