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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7ff811afb723a5bc61f1149ca9ebb5f83ddc49ccf1f70709707b6e6f4f72a8b' 
  AND token = 'CWbFBE/7myC+myHHSbpGNoTmAWha+1fSpOzcMLTNipY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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