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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c965e3301eeb58d1c75190b46797be3e98ac59d00c7eaac25ded756e23b65bc7' 
  AND token = 'ARz0V/saHxvHAO4nYFWqUO41zKf+1XPO8FU/p98vkpE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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