Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06454e58139ee7b737592ca0e393b7d7253e90901d2fc0091d0be7d344ee9c50' 
  AND token = 'B0DHNYsH+CNzsxQDA2QJ6t1qvxK7kSFRrYf//ti3tGQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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