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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '680a9648e206349bb8c8d3060690b8f6bf9a9e96c7accc345a81ba2f2c0e4724' 
  AND token = 'l0ucouQPpEQJiTrmOzaIw1KfCZtzLLx3jgJC8RF2lMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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