Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38a859d0f88763fd57245346844cc21c0246f7c262b26a208a0d871eab74c801' 
  AND token = 'mSpeKCBb0u9L8eYevUYHMcLS9ZqgFOKeZUUwO0Hsodg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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