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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '041e02cc5167d81b824e8e2406392ef1e1ee695527dd4e32a5ec019d9bc108e8' 
  AND token = 'EOyXq5qKmK46A7N32i5qMC0G8B8ha1aMafmzz4coF7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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