Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2362202cf796b27d4990ed7dac07e1206ca180ea70dc2f46e843492ed8bcea01' 
  AND token = 'SKeJo8GN980YvV+dXP+7IOtg4NGHVLSSImnPoYK4xCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}