Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82cc86da1c064f1e49a2d6b54123533f515d2373bede5f372ba99eb0412cad2b' 
  AND token = 'utz8ziBTgVFrIUsJMyp56hkuR7b/vIA1JY36yODAaEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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