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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e865c9a9dc3f7d9ab7efb565bf46d56ddd4cefc412d8b5a3dd9789687cae3141' 
  AND token = 'LhZWeo2DOmWM2X2kof6ujfalYL4a+l3EuOtJWoMGRTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}