Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '45e161a38c6007ec764c03d1a4c135ce8969b6fe17e973be78b1a7b96096d622' 
  AND token = 'pGwbCS+eWnyr9QtSLfRA396+Ob5Ma0sMVnfaKmHvpjE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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