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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '539d2e30ca17c6b020f8a0e0cb3e58fd8e8cd171d8e1ef5d62682ac8b118ba2e' 
  AND token = 'CVlIIPwWIdph4J8lAEXX45tadPvr1eRTF7VrPaTst48=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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