Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aabb0128c8e38b249213620da2b6655a5c24b6026932e7e997e606683f14e0a4' 
  AND token = 'elaQPsnGpzy/D/mc2kQk5E0CGQd/hWPc75omupQaZ70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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