Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d5a6d99832e69d621297de95d0855fa810e098b812c1f69c1f454dc567f33f0' 
  AND token = 'BAbPQQtM2swH1rM48+Xi44InLdmc8nnjw7JIfJDhSwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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