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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc9fd49f4353dd10fd95ece01106a69404e7cc72d188b03bc17451d957ee2779' 
  AND token = 'VHr5TBw4S1NrtpiTiiviDywvw6L28y/O3aSYEP6vtq4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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