Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c4c2477c866ac80ab1a24909d4e58ed9509a554a382d6a299e19243fbd7d338' 
  AND token = 'LdpRsP22Ktg3pBZ8KJav239dnDBE/AWmlzmIDR8kpiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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