Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96a8cb7de3e8ddcb222f0b82f9bbea5556615f7d17b092d0f182702a603b2108' 
  AND token = 'nTKEEob8BW5oHrKzUaN+x3KOiEF56NWe5/MH2455Lko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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