Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '51a7f90ed41693471cbe44c6d95001fb3c173b34c6a30e759bc08e85f57249fc' 
  AND token = 'B22ImcGkqfCG8cTKRiz2RmHtKXvLSTlqvrLRqVQ0ncI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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