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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95022ae5e2a23f54a499e42020ef9cc7430680f43f055ef71f73850f704e75de' 
  AND token = 'BX9j19vzdnsoRCoV3r31MPSJrxDQ/wgzJO3farTqMTg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}