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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f70ccde3a5acb59a6a2d9864df57d489a8daaea05e4307b0f486cd8832cbb27' 
  AND token = '9oYReUu7JiYAPsVRpnU2WV4Conb5OXp13kS0rKvmRWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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