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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e05a4a0556b4674262ff9992f3f5bbf211c499870824ec1a52bb2a1ac2fda8f8' 
  AND token = 'J4l4SQL8ADBKeYyiidbneilr2z2qWdP/iC9FYEC+h9w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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