Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dde043028beeb973c18f7fd4fcd9bb07166f19e055d7e15a62befd632c85c673' 
  AND token = 'ijUm3hQfSMBlzCEceR9wf60ksyYtg4rgpv5QfW9Me5s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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