SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7d2464c311b0d8761f5372ed2561170152d0d22e07ecc89e574ed86d434f740f' 
  AND token = 'zCFPvQ351fwzdNqhjUoVeSAXfz6hrjx1hq11HaYiK+o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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