Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8b35a303fe53307e4c708328a4ccef0444f399889394729fe694ccd5fbac0e8a' 
  AND token = 'rIt8t7yZUAYet3eHelaJGQ/M+zm7HMX10BfRvrJsFpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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