Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e20fff7d0431bace0b91c6bb9cebc803332d8b3db39954d7eb07492c8450131' 
  AND token = 'w4Nke7F9P10pQYcJqby/+9U8S9ofVNmh2X7fA1L8TP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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