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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd96bbd9d1b08151c790a78aa175c262a12bc12d9c64defa4400df0db87c9962e' 
  AND token = '3Sk+HfSdoaIhtHP3FYlfCFn4buNBxmQ8NLV2+lhJl4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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