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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae85bb062e484ceb99403295470833ff9123e8145f88e548a3c98a9f0000a7db' 
  AND token = 'H1WqC9aDt03c6gJqWvVO5pad74sEDdKGZdP3L5nAJJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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