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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '601a736364fb9c14abef0000c49ff80cc8c88d1fce7e3b463d9fc7ead9ef69be' 
  AND token = '2Zi3yEoqh30bz3qbPUkIBvn/813IqUt/C/084H9ORr4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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