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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c8e39c07fd04d23f70d7e253c7d340b4e33f57b51b685e0c430ff05e73812e3f' 
  AND token = '/XOaCxTX1g7iCxwxLnmeoTmftW16x99YIKT+XlOCDJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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