Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '79c33f50a5ad4e5a9404980c194534372f34b5c85134916ad08ef666a5caa4f0' 
  AND token = 'vYxaI0gcLLEvYlW2vmfOXTqsLy2AybYHKsoPdpQnKuA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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