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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'feabd92f501c6c958b7a4e1653ef425840de396f87eca7eca7ef11ff15f85635' 
  AND token = 'PeXXyIal8S9pTSXhMFFmTz8l7daoItQmfOXRhzUtArs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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